<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>按钮状态变化示例</title>
    <style>
        .green1 {
            width: 200px;
            height: 100px;
            border-radius: 8px;
            cursor: pointer;
            transition:  0.3s ease;
        }
        .green1:active {
            background-color: #006400;
        }
    </style>
</head>
<body>
    <button class="green1">123</button>
</body>
</html>